remove the battery and be on the ac power only??????

The best way to keep the battery at peak performance is to actually use it. Run it on battery only until it needs recharging.

However, all batteries have a finite amount of charge/discharge cycles.

If you can't or don't want to use it like that, Apple recommends a full discharge and recharge "conditioning" monthly.

hot cutie wrote:
hey allen,thanks for the advice..so u mean i will suffer from a slow performance?

From http://support.apple.com/kb/HT2332

Summary
MacBook and MacBook Pro: Mac reduces processor speed when battery is removed while operating from an A/C adaptor

<hr>
*Products Affected*
MacBook Pro, MacBook
<hr>

If the battery is removed from a MacBook or MacBook Pro, the computer will automatically reduce the processor speed. This prevents the computer from shutting down if it demands more power than the A/C adaptor alone can provide.

*Additional Information*
Important: It is strongly recommended that you do not use your MacBook or MacBook Pro while the battery is removed. Accidently bumping the A/C adaptor could disconnect power and shutdown the computer. Any information that was not saved on your computer would be lost.

Preserving battery life is one thing, but there can be other advantages - I mainly use AC power for heat issues. My MBP sits in some entertainment system shelving (when not mobile) and runs a lot cooler without the battery. There are also stand alone charger/conditioners (e.g. this one from OWC) to keep the battery in shape.

hot cutie wrote:
hey guys just wanna know if i wanna preserve my battery life and not exhausting it...wat's the bbest way to achieve this?being on the ac power and use my battery less frequently by removing it???

Leave the AC adaptor plugged in all the time, whether you use the MB or not. You will be running from the adapter most of the time and using little of the battery life. I run both my MBPs this way when they are at home.
Removing the battery is never a good idea - it provides voltage stabilization among other things - and it will not make the battery last any longer than leaving the charger plugged in 24/7.

Reduced speed may contribute, but just sitting idle with the lid closed (it doesn't sleep since it is connected to my HDTV), my MBP runs a lot cooler with the battery out. It may be my particular situation, but running hot is a concern - I'm not too too worried about power conditioning, since it runs on a UPS.

Ryan hit the nail on the head. When the battery is out, the processors are clocked down to 70% of normal. That has a big impact on heat. If it's in a media center, that may not matter to you because even at 70% I'm sure it plays video, even HD, just fine.

Hi hot cutie;

You can run you MB without a battery but you will take severe hit in your performance.

Allan

The reason it's running a lot cooler is probably that without the battery the processor is clocked down a bunch.